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MPC5645S connected to a 18 bit display

Question asked by Denis ZALLOT on Oct 11, 2017
Latest reply on Oct 12, 2017 by David Tosenovjan


I wish to connect the DCU3 (Display Controller Unit) of the MPC5645S to a 18 bit TFT display.

In my opinion, the appropriate way to do that is to connect only the 6 most significant bits of the DCU3 to the LCD panel.

This needs to be done for each of the three colors.

I have not been able to find out which is the most significant bit though.

For the red color,  is it DCU_R0 or DCU_R7?

In other terms, do I have to connect PA0[DCU_R0] to PA5[DCU_R5] or PA7[DCU_R7] to PA2[DCU_R2] to my TFT ?